Truck



Jan. 4 1927.,

M. P. HOLMES TRUCK Filed May 28, 1923 aw. 514% An-l! \--l 5N, SaskPatented Jan. 4, 1927.

.lidi S QFFICE.

MORRIS P. HOLMES, 0F GLAREMONT, NEW HAMPSHIRE, ASSIGNOB 'lO SULLIVANVMACHINEB COMFANY, A CORPORATION OF MASSACHUSETTS.

TRUCK.

Application filed May 28,

My invention relates to trucks, and more particularly to transporttrucks for mining machines.

An object of my invention is to provide an improved truck. Anotherobject of my invention is to provide improved means whereby a truck maybe adapted to use on tracks having curves of different radii. A furtherobject of my invention is to provide an improved mining machine truckadapted to meet the requirements of ditferent mine conditions. Otherobjects and advantages ot my invention will hereinafter more fullyappear.

In the accompanying drawings I have shown for purposes of illustrationone embodiment which my invention may assume in practice.

In these drawings l Fig. 1 is a side elevation of a mining machine truckincorporating my improvement.

Figs. 2, 3, and t are detail views, partially in section, the wheelsbeing shown adjusted in position for different wheel bases.

Fig. 5 is a detail plan view showing the arrangement of the wheel andwheel carrying member. 0

In this illustrative Jform of my invention I have shown a mining machinetruck 1 of generally standard form, comprising a rigid body portion 2and a tilting front portion 3 adapted to receive' and support a miningmachine (not shown) in a well known manner. Disposed beneath the rigidbody portion 2 are truck wheels i which, as in usual construction, arefor traction purposes and are arranged close together substantiallybeneath the center of gravity of the truck when the mining machine ismounted for transport thereon. The truck :wheels are mounted on aXles 5having driving connections, herein chain and sprocket connections G and7, respectively, which cooperate with truck driving mechanism, generallydesignated 8, adapted to be driven from the mining machine in anyapproved manner. Disposed at the rear of the rigid body portion is acable reel 9 herein carried on the body port-ion and having suit-abledriving connections, including a belt 10, with the truck drivingmechanism.

In my improved construction it will be noted that disposed beneath therigid body ieee, seran No. 641,890.

portion of the truck are suitably secured, herein by carriage bolts 11,front and rear wheel carrying` members 12 and 13, respectively, whichcomprise brackets 14: having bearing blocks 15 oil'set from the longitudinal center thereof within which the aXles 5 are journaled, andelongated portions 16 and 17 respectively formed thereon, on one side otthe bearing blocks. The brackets 1e have slots 18V on the upper sideswith which the bolts 11 cooperate to provide means for tightening thedriving chains. Suitably secured to the rigid body 2 are blocks 19having set screws 2O arranged therein adapted to threadedly engage thewheel carrying members, as at 21, to hold them in adjusted position. The:tront brackets 1i have apertures 22 formed in each end thereof adaptedto receive pins 23 which form pivots for the tilting front portion 3 ofthe truck. By removing the screws 11 and 2O (see Fig. 5) the brackets 14may be removed and turned end 'to end bringing the oiiset bearing blocks15 andthe e`longated portions 16, 17 nearer to or further away from oneanother, thereby decreasing or increasing the length of the wheel baseas desired.

As a result of my improved construction it will be noted that it ispossible for the wheel carrying members to be adjusted in a plurality ofpositions by a simple transposition ot parts to meet the requirements ofdifferent mine conditions, tor instance, when turning into room neckshaving curved tracks of different radii. Thus for example, in Fig. 2,the front and rear wheel carrying members are so arranged with theelongated portions turned inwardly toward one another, that the bearingblocks are spaced far apart with respect to one another, tlierebyproducing a maximum length ot wheel base, the elongated portions on therear members then extending away from the itront members. In Fig. 3 therear wheel carrying members are shown turned end to end with respect tothe front members while the latter are left arranged as shown in Fig. 2,and the rear axle bearing blocks thus being movec longitudinally withrespect to the truck body in such manner as to produce another andshorter length of wheel base. In Fig. 41, the front wheel carryingmembers are transposed end to end with respect to the rear members whilethe latter are lett as shown in F ig. 3 the elongated portions on thefront members then being extended forwardly and the pivots for thetilting portion oi' the truck being farthest away from the iront axle atthis time, while the front bearing blocks are moved longitudinallyrelative to the truck body and nearer to the rear members in such manneras to produce still another or minimum length or' wheel base. In all otthe adjusted posit-ions of the axles aV relatively slight longitudinaladjustment of any axle may be obtained by means of the bolt and slotconnection ll, 18 for taking up excess slack in the driving chain, theset screws holding them in the desired adjusted positions. It is clearlyevident from the foregoing description that my improved constructionenables a variable wheel base to be produced which is not only of anexceedingly rugged character and well adapted to the adjustments of themanufacturer or user, but which may also be manuractured at a smallexpense and applied to a truck ot standard form.

YWhile I have in this application specilically described one l'orm whichmy invent-ion may assume in practice, it will be understood that thisform is shown for purposes oit illustration and that the invention maybe modified and embodied in various other forms without departing1 fromits spirit or the scope of the appended claims.

lVhat I claim as new and desire to secure by Letters Patent is:

lf In a truclr, a truck body, and wheel means t-hereon including wheelcarrying members each adjustable in different end to end relationstoproduce diiierent wheel bases.

In a truck, a truck body, wheel carrying members disposed beneath saidbody and provided at longitudinally spaced points with means to enableattachment to said body and having axle bearing membersoilisetlongitudinally from a line midway between the longitudinallyspaced points aforesaid, and means to adjust said bea-ring membersrelative to said truck body.

3. In a truck, a truck body, and wheel means therefor including aplurality ot wheel carrying members having longitudinally oilset axlebearings transposable in dilerent relative positions,

Ll. In a truck, a truck body, and wheel means therefor including aplurality ot wheel carrying members transposable relative to each otherhaving longitudinally ollset axle bearing members, and means to adjustsaid wheel carrying members.

5. In a truck, a trucl; body, and wheel means therefor including aplurality ot wheel carrying members having longitudinally offset axlebearings and each bodily transposable relative to said truck body.

G. In a truck, a. truck body, wheel carrying members carried by saidtruck body and formed asymmetrically with respect to the vertical planesot the wheel axes, means to adjust said members into eiiierent relationsto produce wheel bases of substantially different length, and means foradjusting said members longitudinally when in dillerent relations.

l'. In a truck, a truck body, means for varying the wheel base includingfront and rear sets or' wheel carrying members normally giving one wheelbase, and means whereby transposing oneset of members gives anotherwheel base, and supplemental means for adjusting said memberslongitudinally.

8, In a truck, a truc-lr body, wheel carrying members disposed beneathsaid body and having axle bearing members offset longitudinally from thelongitudinal center thereof, and means to adjust said wheel carryingmembers in different end to end relations.

9. In a trnclr, a truck body, wheel means thereon includino` wheelcarrying members adjustable in diner-ent end to end relations. and meansto hold said members in adjusted position, said wheel carrying membersbeing provided at longitudinally spaced points therealong with meanscooperating with said holding means, one of said points being nearer theaxis oi wheel rotation than the other.

l0. In a truck, a truck body provided with a tilt-able portion, wheelmeans thereon including liront and rear wheel carrying means adjustab-le in different end to end relations, and means to pivot saidt-i-ltable portion on said front wheel carrying means.

1l. In a truck, a truck body provided with a tiltable portion, wheelmeans thereon including front and rear wheel carrying means adjustablein different end to end relations, and means to pivot said tiltableportion on said front wheel carrying means in different end to endrelations thereof.

l2. In a truck, a truck body provided with a tiltable portion, andrunning gear including wheel carrying members, one ot which isadjustable into diilerent end to end relations relative to another andprovides pivot means igor said tiitable portion in each relationthereof. said pivot means being so disposed on said wheel carryingmember that the pivotal axis ot said tiltable portion bearssubstantially the same relation to said body in either of said end toend relations.

In testimony whereorP I aiiix my signature.

' MORRIS P. HOLMES.

